Multiple choice There are 12 pairs of cranial nerves in human beings. Ten of these originate from the thalamus pineal gland pituitary gland brainstem hypothalamus Reveal answer Fill a bubble to check yourself D Correct answer Explanation The brainstem includes the midbrain, pons and medulla. Hypothalamus is located in the floor of the third ventricle and is the master control of the autonomic system.